# GA4 Spy

> Reverse-engineer any GA4 or Firebase App configuration from just its public Measurement ID — audit key events, consent mode, Google Signals, enhanced ecommerce, and cross-domain settings.

GA4 Spy inspects publicly exposed GA4 and Firebase config so you can audit your own tracking setup or benchmark competitors. Track properties over time, get diffs when something changes, and receive email/Slack/Teams alerts.

## Pages

- [Home](/): Scan any GA4 (G-XXXXXXXXXX) or Firebase App ID and see its full configuration.
- [Pricing](/pricing): Plans for tracking more properties, faster scan cadence, and shared alerts.
- [Legal](/legal): Legal notice, privacy policy, and cookies.